gallonage

[ gal-uh-nij ]
/ ˈgæl ə nɪdʒ /

noun

the number of gallons of something used.
the rate at which gallons of something are used.

Origin of gallonage

First recorded in 1905–10; gallon + -age

British Dictionary definitions for gallonage

gallonage
/ (ˈɡælənɪdʒ) /

noun

a capacity measured in gallons
the rate of pumping, transmission, or consumption of a fluid in gallons per unit of time